MPEP § 1412.03 — Broadening Reissue Claims (Annotated Rules)

§1412.03 Broadening Reissue Claims

USPTO MPEP version: BlueIron's Update: 2025-12-31

This page consolidates and annotates all enforceable requirements under MPEP § 1412.03, including statutory authority, regulatory rules, examiner guidance, and practice notes. It is provided as guidance, with links to the ground truth sources. This is information only, it is not legal advice.

Broadening Reissue Claims

This section addresses Broadening Reissue Claims. Primary authority: 35 U.S.C. 251(d), 35 U.S.C. 251, and 37 CFR 1.175(b). Contains: 5 requirements, 8 permissions, and 11 other statements.

Key Rules

Topic

Broadening Reissue (Two-Year Limit)

22 rules
StatutoryInformativeAlways
[mpep-1412-03-392845ccb658e13e0bfba22e]
2-Year Limit for Broadening Reissues
Note:
The rule requires that applications for broadening reissues be filed within 2 years of the original patent issuance.

35 U.S.C. 251(d) and the corresponding final paragraph of pre-AIA 35 U.S.C. 251 prescribe a 2-year limit for filing applications for broadening reissues.

Jump to MPEP SourceBroadening Reissue (Two-Year Limit)Original Patent Requirement (Same Invention)Reissue Claim Requirements
StatutoryInformativeAlways
[mpep-1412-03-00c87dd9078487f4dd2016f4]
Reissue Claims Must Not Broaden Original Patent Beyond Two Years
Note:
Reissue claims must not expand the scope of the original patent beyond two years after its grant.

A broadened reissue claim is a claim which enlarges the scope of the claims of the patent, i.e., a claim which is greater in scope than each and every claim of the original patent. If a disclaimer is filed in the patent prior to the filing of a reissue application, the disclaimed claims are not part of the “original patent” under 35 U.S.C. 251. The court in Vectra Fitness Inc. v. TNWK Corp., 162 F.3d 1379, 1383, 49 USPQ2d 1144, 1147 (Fed. Cir. 1998) held that a reissue application violated the statutory prohibition under 35 U.S.C. 251 against broadening the scope of the patent more than 2 years after its grant because the reissue claims are broader than the claims that remain after the disclaimer, even though the reissue claims are narrower than the claims that were disclaimed by the patentee before reissue. The reissue application was bounded by the claims remaining in the patent after a disclaimer is filed.

Jump to MPEP SourceBroadening Reissue (Two-Year Limit)Reissue Claim RequirementsReissue Patent Practice
StatutoryInformativeAlways
[mpep-1412-03-63ba10f685ee412313a1896d]
Reissue Claims Must Not Broaden Original Patent Beyond Two Years
Note:
Patent reissue claims cannot expand the original patent's scope more than two years after its grant.

A broadened reissue claim is a claim which enlarges the scope of the claims of the patent, i.e., a claim which is greater in scope than each and every claim of the original patent. If a disclaimer is filed in the patent prior to the filing of a reissue application, the disclaimed claims are not part of the “original patent” under 35 U.S.C. 251. The court in Vectra Fitness Inc. v. TNWK Corp., 162 F.3d 1379, 1383, 49 USPQ2d 1144, 1147 (Fed. Cir. 1998) held that a reissue application violated the statutory prohibition under 35 U.S.C. 251 against broadening the scope of the patent more than 2 years after its grant because the reissue claims are broader than the claims that remain after the disclaimer, even though the reissue claims are narrower than the claims that were disclaimed by the patentee before reissue. The reissue application was bounded by the claims remaining in the patent after a disclaimer is filed.

Jump to MPEP SourceBroadening Reissue (Two-Year Limit)Original Patent Requirement (Same Invention)Reissue Claim Requirements
StatutoryPermittedAlways
[mpep-1412-03-b9a8eaa0cb51ad45efd97db4]
Reissue Claim Broadens If Any Aspect Is Broader
Note:
A reissued claim broadens the original patent if it covers any aspect more broadly, even if other aspects are narrower.

A claim of a reissue application enlarges the scope of the claims of the patent if it is broader in at least one respect, even though it may be narrower in other respects. See, e.g., 37 CFR 1.175(b). A claim in the reissue application which includes subject matter not covered by the patent claims enlarges the scope of the patent claims. For example, if any amended or newly added claim in the reissue contains within its scope any conceivable product or process which would not have infringed the patent, then that reissue claim would be broader than the patent claims. Tillotson, Ltd. v. Walbro Corp., 831 F.2d 1033, 1037 n.2, 4 USPQ2d 1450, 1453 n.2 (Fed. Cir. 1987); In re Ruth, 278 F.2d 729, 730, 126 USPQ 155, 156 (CCPA 1960); In re Rogoff, 261 F.2d 601, 603, 120 USPQ 185, 186 (CCPA 1958). A claim which covers something that the original claims do not is a broadened claim. A claim would be considered a broadening claim if the patent owner would be able to sue any party for infringement who previously could not have been sued for infringement. Thus, where the original patent claims only the process, and the reissue application newly adds product claims, the scope of the claims has been broadened because a party could not necessarily be sued for infringement of the product based on the claims of the original patent (if it were made by a different process).

Jump to MPEP Source · 37 CFR 1.175(b)Broadening Reissue (Two-Year Limit)Reissue Application FilingReissue Patent Practice
StatutoryInformativeAlways
[mpep-1412-03-cbf9ae43cee0be34e69f5a48]
Claim Including Uncovered Subject Matter Broadens Patent Scope
Note:
A claim in a reissue application that includes subject matter not covered by the original patent claims broadens the scope of those claims.

A claim of a reissue application enlarges the scope of the claims of the patent if it is broader in at least one respect, even though it may be narrower in other respects. See, e.g., 37 CFR 1.175(b). A claim in the reissue application which includes subject matter not covered by the patent claims enlarges the scope of the patent claims. For example, if any amended or newly added claim in the reissue contains within its scope any conceivable product or process which would not have infringed the patent, then that reissue claim would be broader than the patent claims. Tillotson, Ltd. v. Walbro Corp., 831 F.2d 1033, 1037 n.2, 4 USPQ2d 1450, 1453 n.2 (Fed. Cir. 1987); In re Ruth, 278 F.2d 729, 730, 126 USPQ 155, 156 (CCPA 1960); In re Rogoff, 261 F.2d 601, 603, 120 USPQ 185, 186 (CCPA 1958). A claim which covers something that the original claims do not is a broadened claim. A claim would be considered a broadening claim if the patent owner would be able to sue any party for infringement who previously could not have been sued for infringement. Thus, where the original patent claims only the process, and the reissue application newly adds product claims, the scope of the claims has been broadened because a party could not necessarily be sued for infringement of the product based on the claims of the original patent (if it were made by a different process).

Jump to MPEP Source · 37 CFR 1.175(b)Broadening Reissue (Two-Year Limit)Reissue Application FilingReissue Patent Practice
StatutoryInformativeAlways
[mpep-1412-03-019b0d571be31074011e1d4b]
Amended Reissue Claims Must Not Broaden Patent
Note:
Amended or newly added claims in a reissue application must not include any product or process that would not have infringed the original patent.

A claim of a reissue application enlarges the scope of the claims of the patent if it is broader in at least one respect, even though it may be narrower in other respects. See, e.g., 37 CFR 1.175(b). A claim in the reissue application which includes subject matter not covered by the patent claims enlarges the scope of the patent claims. For example, if any amended or newly added claim in the reissue contains within its scope any conceivable product or process which would not have infringed the patent, then that reissue claim would be broader than the patent claims. Tillotson, Ltd. v. Walbro Corp., 831 F.2d 1033, 1037 n.2, 4 USPQ2d 1450, 1453 n.2 (Fed. Cir. 1987); In re Ruth, 278 F.2d 729, 730, 126 USPQ 155, 156 (CCPA 1960); In re Rogoff, 261 F.2d 601, 603, 120 USPQ 185, 186 (CCPA 1958). A claim which covers something that the original claims do not is a broadened claim. A claim would be considered a broadening claim if the patent owner would be able to sue any party for infringement who previously could not have been sued for infringement. Thus, where the original patent claims only the process, and the reissue application newly adds product claims, the scope of the claims has been broadened because a party could not necessarily be sued for infringement of the product based on the claims of the original patent (if it were made by a different process).

Jump to MPEP Source · 37 CFR 1.175(b)Broadening Reissue (Two-Year Limit)Reissue Claim RequirementsReissue Patent Practice
StatutoryInformativeAlways
[mpep-1412-03-29b7c186d332cc15f4aa4d28]
Combination Claims Broadening Original Invention
Note:
The addition of combination claims in a reissue application, where only subcombination claims were present originally, may broaden the invention.

The addition of combination claims in a reissue application where only subcombination claims were present in the original patent could be a broadening of the invention. The question which must be resolved in this case is whether the combination claims added in the reissue would be for “the invention as claimed” in the original patent. See Ex parte Wikdahl, 10 USPQ2d 1546, 1549 (Bd. Pat. App. & Inter. 1989). The newly added combination claims should be analyzed to determine whether they contain every limitation of the subcombination of any claim of the original patent. If the combination claims (added in the reissue) contain every limitation of the subcombination (which was claimed in the original application), then infringement of the combination must also result in infringement of the subcombination. Accordingly, the patent owner could not, if a reissue patent issues with the combination claims, sue any new party for infringement who could not have been sued for infringement of the original patent. Therefore, broadening does not exist, in spite of the addition of the combination.

Jump to MPEP SourceBroadening Reissue (Two-Year Limit)Reissue Application FilingReissue Claim Requirements
StatutoryInformativeAlways
[mpep-1412-03-7f28b8a9f0366495490125d2]
Claim Must Be Greater Than Original
Note:
A reissued claim is considered broadened if it encompasses more than the original patent claims.

As pointed out above, a claim will be considered a broadened reissue claim when it is greater in scope than each and every claim of the patent to be reissued. A corollary of this is that a claim which has been broadened in a reissue as compared to its scope in the patent is not a broadened reissue claim if it is narrower than, or equal in scope to, any other claim which appears in the patent. A common example of this is where dependent claim 2 is broadened via the reissue (other than the addition of a process step to convert an intermediate to a final product), but independent claim 1 on which it is based is not broadened. Because a dependent claim is construed to contain all the limitations of the claim upon which it depends, claim 2 must be at least as narrow as claim 1 and is thus not a broadened reissue claim.

Jump to MPEP SourceBroadening Reissue (Two-Year Limit)Reissue Claim RequirementsReissue Patent Practice
StatutoryInformativeAlways
[mpep-1412-03-298f3794e9f22fe75f1f7819]
Dependent Claim Not Broadened Reissue If Narrower Than Base Claim
Note:
A dependent claim is not considered a broadened reissue claim if it is narrower or equal in scope to the independent claim on which it depends.

As pointed out above, a claim will be considered a broadened reissue claim when it is greater in scope than each and every claim of the patent to be reissued. A corollary of this is that a claim which has been broadened in a reissue as compared to its scope in the patent is not a broadened reissue claim if it is narrower than, or equal in scope to, any other claim which appears in the patent. A common example of this is where dependent claim 2 is broadened via the reissue (other than the addition of a process step to convert an intermediate to a final product), but independent claim 1 on which it is based is not broadened. Because a dependent claim is construed to contain all the limitations of the claim upon which it depends, claim 2 must be at least as narrow as claim 1 and is thus not a broadened reissue claim.

Jump to MPEP SourceBroadening Reissue (Two-Year Limit)Reissue Claim RequirementsReissue Patent Practice
StatutoryPermittedAlways
[mpep-1412-03-26cfa412684d21be808e6358]
Adding Process Claims to Original Product Claims
Note:
A reissue application may add process claims for making the original product, which broadens the invention. For example, using the original product in a new process not previously claimed.
The addition of process claims as a new category of invention to be claimed in the patent (i.e., where there were no method claims present in the original patent) is generally considered as being a broadening of the invention. See Ex parte Wikdahl, 10 USPQ2d 1546, 1549 (Bd. Pat. App. & Inter. 1989). A situation may arise, however, where the reissue application adds a limitation (or limitations) to process A of making the product A claimed in the original patent claims. For example:
  • (1) a process of using the product A (made by the process of the original patent) to make a product B, disclosed but not claimed in the original patent; or
  • (2) a process of using the product A to carry out a process B disclosed but not claimed in the original patent.
Jump to MPEP SourceBroadening Reissue (Two-Year Limit)Reissue Claim RequirementsReissue Patent Practice
StatutoryPermittedAlways
[mpep-1412-03-15649443ffc317c13b1f36d4]
Broadened Claim After Two Years In Reissue
Note:
A broadened claim can be presented in a reissue application up to two years after the original patent grant, or within two years of filing a broadening reissue application.

A broadened claim can be presented within two years from the grant of the original patent in a reissue application. In addition, a broadened claim can be presented after two years from the grant of the original patent in a broadening reissue application which was filed within two years from the grant. Where any intent to broaden is unequivocally indicated in the reissue application within the two years from the patent grant, a broadened claim can subsequently be presented in the reissue after the two year period. (Note: A statement that “the patent is wholly or partly inoperative by reason of claiming more or less than applicant had a right to claim” is NOT an unequivocal statement of an intent to broaden.) Thus, a broadened claim may be presented in a reissue application after the two years, even though the broadened claim presented after the two years is different than the broadened claim presented within the two years. Finally, if intent to broaden is indicated in a parent reissue application within the two years, a broadened claim can be presented in a continuing (continuation or divisional) reissue application after the two year period. See In re Staats, 671 F.3d 1350, 101 USPQ2d 1930 (Fed. Cir. 2012) which dealt with a continuation of a first reissue application in which the first reissue application was filed within two years of the patent grant. The broadened claims in the continuation reissue application were to an embodiment “alternative” to, and “unrelated” to, the broadened claims of the first reissue application that were filed within the 2-year limit. Notice of broadening was found to be sufficient in this instance, with the court holding that there is no basis for requiring the later broadened claims in the continuation reissue application to be related to, or directed to the same embodiment as in the first reissue application. Id. at 1355, 101 USPQ2d at 1934. “[A]fter a broadening reissue application has been filed within the two year statutory period, an applicant is ‘not barred from making further broadening changes’ after the two year period” regardless of whether the further broadening changes are unrelated to the prior broadening reissue application. Id. A reissue application filed on the 2-year anniversary date from the patent grant is considered to be filed within 2 years of the patent grant. See Switzer v. Sockman, 333 F.2d 935, 142 USPQ 226 (CCPA 1964) for a similar rule in interferences.

Jump to MPEP SourceBroadening Reissue (Two-Year Limit)Reissue Claim RequirementsReissue Patent Practice
StatutoryPermittedAlways
[mpep-1412-03-358cc90780d7fa1cfd2a3ef7]
Broadened Claim After Two Years
Note:
A broadened claim can be presented after two years from the patent grant in a reissue application filed within two years.

A broadened claim can be presented within two years from the grant of the original patent in a reissue application. In addition, a broadened claim can be presented after two years from the grant of the original patent in a broadening reissue application which was filed within two years from the grant. Where any intent to broaden is unequivocally indicated in the reissue application within the two years from the patent grant, a broadened claim can subsequently be presented in the reissue after the two year period. (Note: A statement that “the patent is wholly or partly inoperative by reason of claiming more or less than applicant had a right to claim” is NOT an unequivocal statement of an intent to broaden.) Thus, a broadened claim may be presented in a reissue application after the two years, even though the broadened claim presented after the two years is different than the broadened claim presented within the two years. Finally, if intent to broaden is indicated in a parent reissue application within the two years, a broadened claim can be presented in a continuing (continuation or divisional) reissue application after the two year period. See In re Staats, 671 F.3d 1350, 101 USPQ2d 1930 (Fed. Cir. 2012) which dealt with a continuation of a first reissue application in which the first reissue application was filed within two years of the patent grant. The broadened claims in the continuation reissue application were to an embodiment “alternative” to, and “unrelated” to, the broadened claims of the first reissue application that were filed within the 2-year limit. Notice of broadening was found to be sufficient in this instance, with the court holding that there is no basis for requiring the later broadened claims in the continuation reissue application to be related to, or directed to the same embodiment as in the first reissue application. Id. at 1355, 101 USPQ2d at 1934. “[A]fter a broadening reissue application has been filed within the two year statutory period, an applicant is ‘not barred from making further broadening changes’ after the two year period” regardless of whether the further broadening changes are unrelated to the prior broadening reissue application. Id. A reissue application filed on the 2-year anniversary date from the patent grant is considered to be filed within 2 years of the patent grant. See Switzer v. Sockman, 333 F.2d 935, 142 USPQ 226 (CCPA 1964) for a similar rule in interferences.

Jump to MPEP SourceBroadening Reissue (Two-Year Limit)Reissue Claim RequirementsReissue Patent Practice
StatutoryPermittedAlways
[mpep-1412-03-044e919237042f65e656b309]
Intent to Broaden Within Two Years Allows Subsequent Claims
Note:
If an intent to broaden is indicated in the reissue application within two years from patent grant, broadened claims can be presented even after the two-year period.

A broadened claim can be presented within two years from the grant of the original patent in a reissue application. In addition, a broadened claim can be presented after two years from the grant of the original patent in a broadening reissue application which was filed within two years from the grant. Where any intent to broaden is unequivocally indicated in the reissue application within the two years from the patent grant, a broadened claim can subsequently be presented in the reissue after the two year period. (Note: A statement that “the patent is wholly or partly inoperative by reason of claiming more or less than applicant had a right to claim” is NOT an unequivocal statement of an intent to broaden.) Thus, a broadened claim may be presented in a reissue application after the two years, even though the broadened claim presented after the two years is different than the broadened claim presented within the two years. Finally, if intent to broaden is indicated in a parent reissue application within the two years, a broadened claim can be presented in a continuing (continuation or divisional) reissue application after the two year period. See In re Staats, 671 F.3d 1350, 101 USPQ2d 1930 (Fed. Cir. 2012) which dealt with a continuation of a first reissue application in which the first reissue application was filed within two years of the patent grant. The broadened claims in the continuation reissue application were to an embodiment “alternative” to, and “unrelated” to, the broadened claims of the first reissue application that were filed within the 2-year limit. Notice of broadening was found to be sufficient in this instance, with the court holding that there is no basis for requiring the later broadened claims in the continuation reissue application to be related to, or directed to the same embodiment as in the first reissue application. Id. at 1355, 101 USPQ2d at 1934. “[A]fter a broadening reissue application has been filed within the two year statutory period, an applicant is ‘not barred from making further broadening changes’ after the two year period” regardless of whether the further broadening changes are unrelated to the prior broadening reissue application. Id. A reissue application filed on the 2-year anniversary date from the patent grant is considered to be filed within 2 years of the patent grant. See Switzer v. Sockman, 333 F.2d 935, 142 USPQ 226 (CCPA 1964) for a similar rule in interferences.

Jump to MPEP SourceBroadening Reissue (Two-Year Limit)Patent Grant and Document FormatPatent Issue and Publication
StatutoryPermittedAlways
[mpep-1412-03-074419eaff80715ef52bf7b6]
Broadened Claims Allowed After Two Years in Reissue
Note:
A broadened claim can be presented after the two-year period from patent grant in a reissue application, even if different than previously filed claims.

A broadened claim can be presented within two years from the grant of the original patent in a reissue application. In addition, a broadened claim can be presented after two years from the grant of the original patent in a broadening reissue application which was filed within two years from the grant. Where any intent to broaden is unequivocally indicated in the reissue application within the two years from the patent grant, a broadened claim can subsequently be presented in the reissue after the two year period. (Note: A statement that “the patent is wholly or partly inoperative by reason of claiming more or less than applicant had a right to claim” is NOT an unequivocal statement of an intent to broaden.) Thus, a broadened claim may be presented in a reissue application after the two years, even though the broadened claim presented after the two years is different than the broadened claim presented within the two years. Finally, if intent to broaden is indicated in a parent reissue application within the two years, a broadened claim can be presented in a continuing (continuation or divisional) reissue application after the two year period. See In re Staats, 671 F.3d 1350, 101 USPQ2d 1930 (Fed. Cir. 2012) which dealt with a continuation of a first reissue application in which the first reissue application was filed within two years of the patent grant. The broadened claims in the continuation reissue application were to an embodiment “alternative” to, and “unrelated” to, the broadened claims of the first reissue application that were filed within the 2-year limit. Notice of broadening was found to be sufficient in this instance, with the court holding that there is no basis for requiring the later broadened claims in the continuation reissue application to be related to, or directed to the same embodiment as in the first reissue application. Id. at 1355, 101 USPQ2d at 1934. “[A]fter a broadening reissue application has been filed within the two year statutory period, an applicant is ‘not barred from making further broadening changes’ after the two year period” regardless of whether the further broadening changes are unrelated to the prior broadening reissue application. Id. A reissue application filed on the 2-year anniversary date from the patent grant is considered to be filed within 2 years of the patent grant. See Switzer v. Sockman, 333 F.2d 935, 142 USPQ 226 (CCPA 1964) for a similar rule in interferences.

Jump to MPEP SourceBroadening Reissue (Two-Year Limit)Reissue Patent PracticeOriginal Patent Requirement (Same Invention)
StatutoryPermittedAlways
[mpep-1412-03-f40bcee5d51119bc0678f6df]
Intent to Broaden Indicated in Parent Reissue Within Two Years Allows Broadened Claim in Continuing Reissue After Two Years
Note:
If a parent reissue application within two years indicates intent to broaden, a broadened claim can be presented in a continuing reissue application after the two-year period.

A broadened claim can be presented within two years from the grant of the original patent in a reissue application. In addition, a broadened claim can be presented after two years from the grant of the original patent in a broadening reissue application which was filed within two years from the grant. Where any intent to broaden is unequivocally indicated in the reissue application within the two years from the patent grant, a broadened claim can subsequently be presented in the reissue after the two year period. (Note: A statement that “the patent is wholly or partly inoperative by reason of claiming more or less than applicant had a right to claim” is NOT an unequivocal statement of an intent to broaden.) Thus, a broadened claim may be presented in a reissue application after the two years, even though the broadened claim presented after the two years is different than the broadened claim presented within the two years. Finally, if intent to broaden is indicated in a parent reissue application within the two years, a broadened claim can be presented in a continuing (continuation or divisional) reissue application after the two year period. See In re Staats, 671 F.3d 1350, 101 USPQ2d 1930 (Fed. Cir. 2012) which dealt with a continuation of a first reissue application in which the first reissue application was filed within two years of the patent grant. The broadened claims in the continuation reissue application were to an embodiment “alternative” to, and “unrelated” to, the broadened claims of the first reissue application that were filed within the 2-year limit. Notice of broadening was found to be sufficient in this instance, with the court holding that there is no basis for requiring the later broadened claims in the continuation reissue application to be related to, or directed to the same embodiment as in the first reissue application. Id. at 1355, 101 USPQ2d at 1934. “[A]fter a broadening reissue application has been filed within the two year statutory period, an applicant is ‘not barred from making further broadening changes’ after the two year period” regardless of whether the further broadening changes are unrelated to the prior broadening reissue application. Id. A reissue application filed on the 2-year anniversary date from the patent grant is considered to be filed within 2 years of the patent grant. See Switzer v. Sockman, 333 F.2d 935, 142 USPQ 226 (CCPA 1964) for a similar rule in interferences.

Jump to MPEP SourceBroadening Reissue (Two-Year Limit)Reissue Patent PracticeOriginal Patent Requirement (Same Invention)
StatutoryInformativeAlways
[mpep-1412-03-1194fb9e266968cf5433cdf9]
Broadening Claims After Two Years In Continuation Reissue
Note:
A broadened claim can be presented in a continuation reissue application after the two-year period if intent to broaden was indicated within the initial two years.

A broadened claim can be presented within two years from the grant of the original patent in a reissue application. In addition, a broadened claim can be presented after two years from the grant of the original patent in a broadening reissue application which was filed within two years from the grant. Where any intent to broaden is unequivocally indicated in the reissue application within the two years from the patent grant, a broadened claim can subsequently be presented in the reissue after the two year period. (Note: A statement that “the patent is wholly or partly inoperative by reason of claiming more or less than applicant had a right to claim” is NOT an unequivocal statement of an intent to broaden.) Thus, a broadened claim may be presented in a reissue application after the two years, even though the broadened claim presented after the two years is different than the broadened claim presented within the two years. Finally, if intent to broaden is indicated in a parent reissue application within the two years, a broadened claim can be presented in a continuing (continuation or divisional) reissue application after the two year period. See In re Staats, 671 F.3d 1350, 101 USPQ2d 1930 (Fed. Cir. 2012) which dealt with a continuation of a first reissue application in which the first reissue application was filed within two years of the patent grant. The broadened claims in the continuation reissue application were to an embodiment “alternative” to, and “unrelated” to, the broadened claims of the first reissue application that were filed within the 2-year limit. Notice of broadening was found to be sufficient in this instance, with the court holding that there is no basis for requiring the later broadened claims in the continuation reissue application to be related to, or directed to the same embodiment as in the first reissue application. Id. at 1355, 101 USPQ2d at 1934. “[A]fter a broadening reissue application has been filed within the two year statutory period, an applicant is ‘not barred from making further broadening changes’ after the two year period” regardless of whether the further broadening changes are unrelated to the prior broadening reissue application. Id. A reissue application filed on the 2-year anniversary date from the patent grant is considered to be filed within 2 years of the patent grant. See Switzer v. Sockman, 333 F.2d 935, 142 USPQ 226 (CCPA 1964) for a similar rule in interferences.

Jump to MPEP SourceBroadening Reissue (Two-Year Limit)Patent Grant and Document FormatPatent Issue and Publication
StatutoryInformativeAlways
[mpep-1412-03-0dfb99e0cad156f313c2f001]
Broadened Claims Not Restricted to Same Embodiment
Note:
A broadened claim in a continuation reissue application can be different from the initial broadened claims as long as intent to broaden was indicated within two years of patent grant.

A broadened claim can be presented within two years from the grant of the original patent in a reissue application. In addition, a broadened claim can be presented after two years from the grant of the original patent in a broadening reissue application which was filed within two years from the grant. Where any intent to broaden is unequivocally indicated in the reissue application within the two years from the patent grant, a broadened claim can subsequently be presented in the reissue after the two year period. (Note: A statement that “the patent is wholly or partly inoperative by reason of claiming more or less than applicant had a right to claim” is NOT an unequivocal statement of an intent to broaden.) Thus, a broadened claim may be presented in a reissue application after the two years, even though the broadened claim presented after the two years is different than the broadened claim presented within the two years. Finally, if intent to broaden is indicated in a parent reissue application within the two years, a broadened claim can be presented in a continuing (continuation or divisional) reissue application after the two year period. See In re Staats, 671 F.3d 1350, 101 USPQ2d 1930 (Fed. Cir. 2012) which dealt with a continuation of a first reissue application in which the first reissue application was filed within two years of the patent grant. The broadened claims in the continuation reissue application were to an embodiment “alternative” to, and “unrelated” to, the broadened claims of the first reissue application that were filed within the 2-year limit. Notice of broadening was found to be sufficient in this instance, with the court holding that there is no basis for requiring the later broadened claims in the continuation reissue application to be related to, or directed to the same embodiment as in the first reissue application. Id. at 1355, 101 USPQ2d at 1934. “[A]fter a broadening reissue application has been filed within the two year statutory period, an applicant is ‘not barred from making further broadening changes’ after the two year period” regardless of whether the further broadening changes are unrelated to the prior broadening reissue application. Id. A reissue application filed on the 2-year anniversary date from the patent grant is considered to be filed within 2 years of the patent grant. See Switzer v. Sockman, 333 F.2d 935, 142 USPQ 226 (CCPA 1964) for a similar rule in interferences.

Jump to MPEP SourceBroadening Reissue (Two-Year Limit)Reissue Claim RequirementsReissue Patent Practice
StatutoryInformativeAlways
[mpep-1412-03-d5d960fc82a35a18faa2b323]
Further Broadening Changes Allowed After Two Years
Note:
An applicant can make additional broadening changes to a patent after the two-year period if a broadening reissue application was filed within that time.

A broadened claim can be presented within two years from the grant of the original patent in a reissue application. In addition, a broadened claim can be presented after two years from the grant of the original patent in a broadening reissue application which was filed within two years from the grant. Where any intent to broaden is unequivocally indicated in the reissue application within the two years from the patent grant, a broadened claim can subsequently be presented in the reissue after the two year period. (Note: A statement that “the patent is wholly or partly inoperative by reason of claiming more or less than applicant had a right to claim” is NOT an unequivocal statement of an intent to broaden.) Thus, a broadened claim may be presented in a reissue application after the two years, even though the broadened claim presented after the two years is different than the broadened claim presented within the two years. Finally, if intent to broaden is indicated in a parent reissue application within the two years, a broadened claim can be presented in a continuing (continuation or divisional) reissue application after the two year period. See In re Staats, 671 F.3d 1350, 101 USPQ2d 1930 (Fed. Cir. 2012) which dealt with a continuation of a first reissue application in which the first reissue application was filed within two years of the patent grant. The broadened claims in the continuation reissue application were to an embodiment “alternative” to, and “unrelated” to, the broadened claims of the first reissue application that were filed within the 2-year limit. Notice of broadening was found to be sufficient in this instance, with the court holding that there is no basis for requiring the later broadened claims in the continuation reissue application to be related to, or directed to the same embodiment as in the first reissue application. Id. at 1355, 101 USPQ2d at 1934. “[A]fter a broadening reissue application has been filed within the two year statutory period, an applicant is ‘not barred from making further broadening changes’ after the two year period” regardless of whether the further broadening changes are unrelated to the prior broadening reissue application. Id. A reissue application filed on the 2-year anniversary date from the patent grant is considered to be filed within 2 years of the patent grant. See Switzer v. Sockman, 333 F.2d 935, 142 USPQ 226 (CCPA 1964) for a similar rule in interferences.

Jump to MPEP SourceBroadening Reissue (Two-Year Limit)Reissue Claim RequirementsReissue Patent Practice
StatutoryInformativeAlways
[mpep-1412-03-d8d264e2904d453ec6d5c3fc]
Reissue Application Filed on 2-Year Anniversary Within Two Years
Note:
A reissue application filed on the exact two-year anniversary of patent grant is considered timely and within the two-year limit for broadening claims.

A broadened claim can be presented within two years from the grant of the original patent in a reissue application. In addition, a broadened claim can be presented after two years from the grant of the original patent in a broadening reissue application which was filed within two years from the grant. Where any intent to broaden is unequivocally indicated in the reissue application within the two years from the patent grant, a broadened claim can subsequently be presented in the reissue after the two year period. (Note: A statement that “the patent is wholly or partly inoperative by reason of claiming more or less than applicant had a right to claim” is NOT an unequivocal statement of an intent to broaden.) Thus, a broadened claim may be presented in a reissue application after the two years, even though the broadened claim presented after the two years is different than the broadened claim presented within the two years. Finally, if intent to broaden is indicated in a parent reissue application within the two years, a broadened claim can be presented in a continuing (continuation or divisional) reissue application after the two year period. See In re Staats, 671 F.3d 1350, 101 USPQ2d 1930 (Fed. Cir. 2012) which dealt with a continuation of a first reissue application in which the first reissue application was filed within two years of the patent grant. The broadened claims in the continuation reissue application were to an embodiment “alternative” to, and “unrelated” to, the broadened claims of the first reissue application that were filed within the 2-year limit. Notice of broadening was found to be sufficient in this instance, with the court holding that there is no basis for requiring the later broadened claims in the continuation reissue application to be related to, or directed to the same embodiment as in the first reissue application. Id. at 1355, 101 USPQ2d at 1934. “[A]fter a broadening reissue application has been filed within the two year statutory period, an applicant is ‘not barred from making further broadening changes’ after the two year period” regardless of whether the further broadening changes are unrelated to the prior broadening reissue application. Id. A reissue application filed on the 2-year anniversary date from the patent grant is considered to be filed within 2 years of the patent grant. See Switzer v. Sockman, 333 F.2d 935, 142 USPQ 226 (CCPA 1964) for a similar rule in interferences.

Jump to MPEP SourceBroadening Reissue (Two-Year Limit)Patent Grant and Document FormatPatent Issue and Publication
StatutoryInformativeAlways
[mpep-1412-03-a622a1d64519c28023cfd30b]
Two-Year Limit for Broadened Claims
Note:
The proposal for broadened claims in a reissue application must be made within two years from the original patent grant and notify the public accordingly.

In re Graff, 111 F.3d 874, 877, 42 USPQ2d 1471, 1473-74 (Fed. Cir. 1997) (Broadened claims in a continuing reissue application were properly rejected under 35 U.S.C. 251 because the proposal for broadened claims was not made (in the parent reissue application) within two years from the grant of the original patent and the public was not notified that broadened claims were being sought until after the two-year period elapsed.)

Jump to MPEP SourceBroadening Reissue (Two-Year Limit)Original Patent Requirement (Same Invention)Reissue Claim Requirements
StatutoryPermittedAlways
[mpep-1412-03-b09ec5752ea5c617a9b1cc6c]
Timely Broadened Claims Permitted After Two Years
Note:
An applicant may broaden claims in a reissue prosecution even after the two-year limit if the application is timely filed and the intent to broaden is indicated.

In re Doll, 419 F.2d 925, 928, 164 USPQ 218, 220 (CCPA 1970) (If the reissue application is timely filed within two years of the original patent grant and the applicant indicates in the oath or declaration that the claims will be broadened, then applicant may subsequently broaden the claims in the pending reissue prosecution even if the additional broadening occurs beyond the two year limit.).

Jump to MPEP SourceBroadening Reissue (Two-Year Limit)Reissue Oath/Declaration ContentPatent Grant and Document Format
StatutoryRequiredAlways
[mpep-1412-03-f3a97d874894f9c7ba3b5c0c]
Supplemental Reissue Oath Must Be Signed by All Inventors
Note:
If a supplemental oath or declaration is needed for broadening reissue applications filed before September 16, 2012, it must be signed by all inventors to fulfill the requirements of 37 CFR 1.175.

A broadening reissue application filed before September 16, 2012 must be applied for by all of the inventors (patentees), that is, the original reissue oath or declaration must be signed by all of the inventors. See also MPEP § 1414. The error in not presenting broader claims must have been made without deceptive intent. If a supplemental oath or declaration in a broadening reissue application is needed in the application in order to fulfill the requirements of 37 CFR 1.175, the supplemental reissue oath or declaration must be signed by all of the inventors. See In re Hayes, 53 USPQ2d 1222 (Comm’r Pat. 1999) and MPEP § 1414.03.

Jump to MPEP Source · 37 CFR 1.175Broadening Reissue (Two-Year Limit)Reissue Oath/Declaration ContentSupplemental Reissue Oath/Declaration
Topic

Original Patent Requirement (Same Invention)

6 rules
StatutoryInformativeAlways
[mpep-1412-03-60255524d0341d4a3381c462]
Disclaimed Claims Are Not Part of Original Patent Under 35 U.S.C. 251
Note:
If a disclaimer is filed before filing a reissue application, the disclaimed claims are not considered part of the original patent under 35 U.S.C. 251.

A broadened reissue claim is a claim which enlarges the scope of the claims of the patent, i.e., a claim which is greater in scope than each and every claim of the original patent. If a disclaimer is filed in the patent prior to the filing of a reissue application, the disclaimed claims are not part of the “original patent” under 35 U.S.C. 251. The court in Vectra Fitness Inc. v. TNWK Corp., 162 F.3d 1379, 1383, 49 USPQ2d 1144, 1147 (Fed. Cir. 1998) held that a reissue application violated the statutory prohibition under 35 U.S.C. 251 against broadening the scope of the patent more than 2 years after its grant because the reissue claims are broader than the claims that remain after the disclaimer, even though the reissue claims are narrower than the claims that were disclaimed by the patentee before reissue. The reissue application was bounded by the claims remaining in the patent after a disclaimer is filed.

Jump to MPEP SourceOriginal Patent Requirement (Same Invention)Reissue Claim RequirementsReissue Patent Practice
StatutoryInformativeAlways
[mpep-1412-03-973fd68d7b93dfd4cdbf9e4b]
Reissue Claim Must Include Original Patent Invention
Note:
A reissue claim must not broaden the scope of the original patent claims by including subject matter not covered in the original claims.

A claim of a reissue application enlarges the scope of the claims of the patent if it is broader in at least one respect, even though it may be narrower in other respects. See, e.g., 37 CFR 1.175(b). A claim in the reissue application which includes subject matter not covered by the patent claims enlarges the scope of the patent claims. For example, if any amended or newly added claim in the reissue contains within its scope any conceivable product or process which would not have infringed the patent, then that reissue claim would be broader than the patent claims. Tillotson, Ltd. v. Walbro Corp., 831 F.2d 1033, 1037 n.2, 4 USPQ2d 1450, 1453 n.2 (Fed. Cir. 1987); In re Ruth, 278 F.2d 729, 730, 126 USPQ 155, 156 (CCPA 1960); In re Rogoff, 261 F.2d 601, 603, 120 USPQ 185, 186 (CCPA 1958). A claim which covers something that the original claims do not is a broadened claim. A claim would be considered a broadening claim if the patent owner would be able to sue any party for infringement who previously could not have been sued for infringement. Thus, where the original patent claims only the process, and the reissue application newly adds product claims, the scope of the claims has been broadened because a party could not necessarily be sued for infringement of the product based on the claims of the original patent (if it were made by a different process).

Jump to MPEP Source · 37 CFR 1.175(b)Original Patent Requirement (Same Invention)Reissue Patent PracticeConsent of Assignee
StatutoryInformativeAlways
[mpep-1412-03-e313562fc886c404a8fe7ab2]
Claim Covers New Invention Aspects
Note:
A claim in a reissue application that includes subject matter not covered by the original patent enlarges its scope.

A claim of a reissue application enlarges the scope of the claims of the patent if it is broader in at least one respect, even though it may be narrower in other respects. See, e.g., 37 CFR 1.175(b). A claim in the reissue application which includes subject matter not covered by the patent claims enlarges the scope of the patent claims. For example, if any amended or newly added claim in the reissue contains within its scope any conceivable product or process which would not have infringed the patent, then that reissue claim would be broader than the patent claims. Tillotson, Ltd. v. Walbro Corp., 831 F.2d 1033, 1037 n.2, 4 USPQ2d 1450, 1453 n.2 (Fed. Cir. 1987); In re Ruth, 278 F.2d 729, 730, 126 USPQ 155, 156 (CCPA 1960); In re Rogoff, 261 F.2d 601, 603, 120 USPQ 185, 186 (CCPA 1958). A claim which covers something that the original claims do not is a broadened claim. A claim would be considered a broadening claim if the patent owner would be able to sue any party for infringement who previously could not have been sued for infringement. Thus, where the original patent claims only the process, and the reissue application newly adds product claims, the scope of the claims has been broadened because a party could not necessarily be sued for infringement of the product based on the claims of the original patent (if it were made by a different process).

Jump to MPEP Source · 37 CFR 1.175(b)Original Patent Requirement (Same Invention)Reissue Patent PracticeConsent of Assignee
StatutoryInformativeAlways
[mpep-1412-03-58f0e60a111dfd6cb267087b]
Combination Claims Must Include All Subcombination Limitations
Note:
New combination claims added in a reissue must include every limitation of any subcombination claim from the original patent to avoid broadening the invention.

The addition of combination claims in a reissue application where only subcombination claims were present in the original patent could be a broadening of the invention. The question which must be resolved in this case is whether the combination claims added in the reissue would be for “the invention as claimed” in the original patent. See Ex parte Wikdahl, 10 USPQ2d 1546, 1549 (Bd. Pat. App. & Inter. 1989). The newly added combination claims should be analyzed to determine whether they contain every limitation of the subcombination of any claim of the original patent. If the combination claims (added in the reissue) contain every limitation of the subcombination (which was claimed in the original application), then infringement of the combination must also result in infringement of the subcombination. Accordingly, the patent owner could not, if a reissue patent issues with the combination claims, sue any new party for infringement who could not have been sued for infringement of the original patent. Therefore, broadening does not exist, in spite of the addition of the combination.

Jump to MPEP SourceOriginal Patent Requirement (Same Invention)Reissue Patent PracticeConsent of Assignee
StatutoryInformativeAlways
[mpep-1412-03-05a93478201c259f2a656bef]
Broadened Claims After Two Years
Note:
Permits presenting broadened claims in reissue applications after the two-year period, provided intent to broaden is indicated within the initial two years.

A broadened claim can be presented within two years from the grant of the original patent in a reissue application. In addition, a broadened claim can be presented after two years from the grant of the original patent in a broadening reissue application which was filed within two years from the grant. Where any intent to broaden is unequivocally indicated in the reissue application within the two years from the patent grant, a broadened claim can subsequently be presented in the reissue after the two year period. (Note: A statement that “the patent is wholly or partly inoperative by reason of claiming more or less than applicant had a right to claim” is NOT an unequivocal statement of an intent to broaden.) Thus, a broadened claim may be presented in a reissue application after the two years, even though the broadened claim presented after the two years is different than the broadened claim presented within the two years. Finally, if intent to broaden is indicated in a parent reissue application within the two years, a broadened claim can be presented in a continuing (continuation or divisional) reissue application after the two year period. See In re Staats, 671 F.3d 1350, 101 USPQ2d 1930 (Fed. Cir. 2012) which dealt with a continuation of a first reissue application in which the first reissue application was filed within two years of the patent grant. The broadened claims in the continuation reissue application were to an embodiment “alternative” to, and “unrelated” to, the broadened claims of the first reissue application that were filed within the 2-year limit. Notice of broadening was found to be sufficient in this instance, with the court holding that there is no basis for requiring the later broadened claims in the continuation reissue application to be related to, or directed to the same embodiment as in the first reissue application. Id. at 1355, 101 USPQ2d at 1934. “[A]fter a broadening reissue application has been filed within the two year statutory period, an applicant is ‘not barred from making further broadening changes’ after the two year period” regardless of whether the further broadening changes are unrelated to the prior broadening reissue application. Id. A reissue application filed on the 2-year anniversary date from the patent grant is considered to be filed within 2 years of the patent grant. See Switzer v. Sockman, 333 F.2d 935, 142 USPQ 226 (CCPA 1964) for a similar rule in interferences.

Jump to MPEP SourceOriginal Patent Requirement (Same Invention)Reissue Patent PracticeBroadening Reissue (Two-Year Limit)
StatutoryInformativeAlways
[mpep-1412-03-e9882172fd471e9e85c7bf71]
Broadened Claims After Two Years in Reissues
Note:
Permits presenting broadened claims after two years from patent grant if intent to broaden is indicated within the initial two-year period.

A broadened claim can be presented within two years from the grant of the original patent in a reissue application. In addition, a broadened claim can be presented after two years from the grant of the original patent in a broadening reissue application which was filed within two years from the grant. Where any intent to broaden is unequivocally indicated in the reissue application within the two years from the patent grant, a broadened claim can subsequently be presented in the reissue after the two year period. (Note: A statement that “the patent is wholly or partly inoperative by reason of claiming more or less than applicant had a right to claim” is NOT an unequivocal statement of an intent to broaden.) Thus, a broadened claim may be presented in a reissue application after the two years, even though the broadened claim presented after the two years is different than the broadened claim presented within the two years. Finally, if intent to broaden is indicated in a parent reissue application within the two years, a broadened claim can be presented in a continuing (continuation or divisional) reissue application after the two year period. See In re Staats, 671 F.3d 1350, 101 USPQ2d 1930 (Fed. Cir. 2012) which dealt with a continuation of a first reissue application in which the first reissue application was filed within two years of the patent grant. The broadened claims in the continuation reissue application were to an embodiment “alternative” to, and “unrelated” to, the broadened claims of the first reissue application that were filed within the 2-year limit. Notice of broadening was found to be sufficient in this instance, with the court holding that there is no basis for requiring the later broadened claims in the continuation reissue application to be related to, or directed to the same embodiment as in the first reissue application. Id. at 1355, 101 USPQ2d at 1934. “[A]fter a broadening reissue application has been filed within the two year statutory period, an applicant is ‘not barred from making further broadening changes’ after the two year period” regardless of whether the further broadening changes are unrelated to the prior broadening reissue application. Id. A reissue application filed on the 2-year anniversary date from the patent grant is considered to be filed within 2 years of the patent grant. See Switzer v. Sockman, 333 F.2d 935, 142 USPQ 226 (CCPA 1964) for a similar rule in interferences.

Jump to MPEP SourceOriginal Patent Requirement (Same Invention)Reissue Patent PracticeBroadening Reissue (Two-Year Limit)
Topic

Reissue Patent Practice

5 rules
StatutoryInformativeAlways
[mpep-1412-03-8e45cd1e216628d06ff5317a]
Reissue Claims Must Match Remaining Claims After Disclaimers
Note:
A reissued patent's claims must not broaden beyond the scope of the remaining claims after a disclaimer is filed.

A broadened reissue claim is a claim which enlarges the scope of the claims of the patent, i.e., a claim which is greater in scope than each and every claim of the original patent. If a disclaimer is filed in the patent prior to the filing of a reissue application, the disclaimed claims are not part of the “original patent” under 35 U.S.C. 251. The court in Vectra Fitness Inc. v. TNWK Corp., 162 F.3d 1379, 1383, 49 USPQ2d 1144, 1147 (Fed. Cir. 1998) held that a reissue application violated the statutory prohibition under 35 U.S.C. 251 against broadening the scope of the patent more than 2 years after its grant because the reissue claims are broader than the claims that remain after the disclaimer, even though the reissue claims are narrower than the claims that were disclaimed by the patentee before reissue. The reissue application was bounded by the claims remaining in the patent after a disclaimer is filed.

Jump to MPEP SourceReissue Patent PracticeBroadening Reissue (Two-Year Limit)Original Patent Requirement (Same Invention)
StatutoryRequiredAlways
[mpep-1412-03-7b0b1dfd2f28434974fcc371]
Infringement of Combination Implies Subcombination Infringement
Note:
If a reissue adds combination claims containing all limitations of original subcombination claims, infringing the combination also infringes the subcombination.

The addition of combination claims in a reissue application where only subcombination claims were present in the original patent could be a broadening of the invention. The question which must be resolved in this case is whether the combination claims added in the reissue would be for “the invention as claimed” in the original patent. See Ex parte Wikdahl, 10 USPQ2d 1546, 1549 (Bd. Pat. App. & Inter. 1989). The newly added combination claims should be analyzed to determine whether they contain every limitation of the subcombination of any claim of the original patent. If the combination claims (added in the reissue) contain every limitation of the subcombination (which was claimed in the original application), then infringement of the combination must also result in infringement of the subcombination. Accordingly, the patent owner could not, if a reissue patent issues with the combination claims, sue any new party for infringement who could not have been sued for infringement of the original patent. Therefore, broadening does not exist, in spite of the addition of the combination.

Jump to MPEP SourceReissue Patent PracticeOriginal Patent Requirement (Same Invention)Consent of Assignee
StatutoryInformativeAlways
[mpep-1412-03-2d6f5390b1a66869e4a1836c]
Dependent Claim Must Not Be Broader Than Independent Claim
Note:
A dependent claim cannot be broadened in reissue unless the independent claim it depends on is also broadened.

As pointed out above, a claim will be considered a broadened reissue claim when it is greater in scope than each and every claim of the patent to be reissued. A corollary of this is that a claim which has been broadened in a reissue as compared to its scope in the patent is not a broadened reissue claim if it is narrower than, or equal in scope to, any other claim which appears in the patent. A common example of this is where dependent claim 2 is broadened via the reissue (other than the addition of a process step to convert an intermediate to a final product), but independent claim 1 on which it is based is not broadened. Because a dependent claim is construed to contain all the limitations of the claim upon which it depends, claim 2 must be at least as narrow as claim 1 and is thus not a broadened reissue claim.

Jump to MPEP SourceReissue Patent PracticeOriginal Patent Requirement (Same Invention)Broadening Reissue (Two-Year Limit)
StatutoryInformativeAlways
[mpep-1412-03-363d6b69aab08270ff26ccbc]
Continuation Reissue Can Present Unrelated Broadened Claims
Note:
A continuation reissue application can present broadened claims that are unrelated to the broadened claims of a first reissue application filed within two years from the patent grant.

A broadened claim can be presented within two years from the grant of the original patent in a reissue application. In addition, a broadened claim can be presented after two years from the grant of the original patent in a broadening reissue application which was filed within two years from the grant. Where any intent to broaden is unequivocally indicated in the reissue application within the two years from the patent grant, a broadened claim can subsequently be presented in the reissue after the two year period. (Note: A statement that “the patent is wholly or partly inoperative by reason of claiming more or less than applicant had a right to claim” is NOT an unequivocal statement of an intent to broaden.) Thus, a broadened claim may be presented in a reissue application after the two years, even though the broadened claim presented after the two years is different than the broadened claim presented within the two years. Finally, if intent to broaden is indicated in a parent reissue application within the two years, a broadened claim can be presented in a continuing (continuation or divisional) reissue application after the two year period. See In re Staats, 671 F.3d 1350, 101 USPQ2d 1930 (Fed. Cir. 2012) which dealt with a continuation of a first reissue application in which the first reissue application was filed within two years of the patent grant. The broadened claims in the continuation reissue application were to an embodiment “alternative” to, and “unrelated” to, the broadened claims of the first reissue application that were filed within the 2-year limit. Notice of broadening was found to be sufficient in this instance, with the court holding that there is no basis for requiring the later broadened claims in the continuation reissue application to be related to, or directed to the same embodiment as in the first reissue application. Id. at 1355, 101 USPQ2d at 1934. “[A]fter a broadening reissue application has been filed within the two year statutory period, an applicant is ‘not barred from making further broadening changes’ after the two year period” regardless of whether the further broadening changes are unrelated to the prior broadening reissue application. Id. A reissue application filed on the 2-year anniversary date from the patent grant is considered to be filed within 2 years of the patent grant. See Switzer v. Sockman, 333 F.2d 935, 142 USPQ 226 (CCPA 1964) for a similar rule in interferences.

Jump to MPEP SourceReissue Patent PracticeOriginal Patent Requirement (Same Invention)Broadening Reissue (Two-Year Limit)
StatutoryPermittedAlways
[mpep-1412-03-70f483121152e7eb143e1b4f]
Claims May Be Rejected for Improper Broadening
Note:
Form paragraphs 14.12 and 14.13 can be used to reject claims that have been improperly broadened during reissue proceedings.

Form paragraphs 14.12 and 14.13 may be used in rejections based on improper broadened reissue claims.

Jump to MPEP SourceReissue Patent PracticeGrounds for Reissue
Topic

AIA Effective Dates

5 rules
StatutoryRequiredAlways
[mpep-1412-03-46d26be9add1b0878bae84ad]
All Patentees Must File Broadening Reissue
Note:
All patentees must file broadening reissue applications on or after September 16, 2012, and the original reissue oath or declaration must be signed by all inventors unless filed under 37 CFR 1.46 by the assignee of the entire interest.

Any reissue application filed on or after September 16, 2012 must be applied for by all of the patentees. However, in a broadening reissue application filed on or after September 16, 2012, the original reissue oath or declaration must be signed by all of the inventors, unless the application for the patent (for which reissue is requested) was filed under 37 CFR 1.46 by the assignee of the entire interest (see 37 CFR 1.175(c)(2)). See also MPEP § 1414. A supplemental oath or declaration to account for errors corrected subsequent to the original oath or declaration is not needed for the application; however, a replacement oath or declaration would still be required where there is a failure to identify any error, or a failure to identify at least one error of the type that would support a reissue. Such a replacement oath or declaration must be signed by all of the inventors, unless the application for the patent (for which reissue is requested) was filed under 37 CFR 1.46 by the assignee of the entire interest.

Jump to MPEP Source · 37 CFR 1.46AIA Effective DatesConsent of AssigneeBroadening Reissue (Two-Year Limit)
StatutoryRequiredAlways
[mpep-1412-03-64f64ea3649f814f56446713]
Inventor’s Oath Must Identify Specific Claim to Broaden
Note:
The inventor's oath or declaration must specify a particular claim that the reissue application aims to broaden, as required by 37 CFR 1.175(b).

For any broadening reissue application filed on or after September 16, 2012, the inventor’s oath or declaration must identify a specific claim that the application seeks to broaden. See 37 CFR 1.175(b). A general statement, e.g., that all claims are broadened, is not sufficient to satisfy this requirement.

Jump to MPEP Source · 37 CFR 1.175(b)AIA Effective DatesBroadening Reissue (Two-Year Limit)Reissue Oath/Declaration Content
StatutoryInformativeAlways
[mpep-1412-03-7015c21ae8a1f3b858d382c4]
Specific Claim Must Be Identified for Broadening Reissue Application
Note:
For broadening reissue applications filed on or after September 16, 2012, the inventor’s oath or declaration must identify a specific claim to be broadened.

For any broadening reissue application filed on or after September 16, 2012, the inventor’s oath or declaration must identify a specific claim that the application seeks to broaden. See 37 CFR 1.175(b). A general statement, e.g., that all claims are broadened, is not sufficient to satisfy this requirement.

Jump to MPEP Source · 37 CFR 1.175(b)AIA Effective DatesBroadening Reissue (Two-Year Limit)Reissue Oath/Declaration Content
StatutoryRequiredAlways
[mpep-1412-03-4f88d695f11930cd35baa3ee]
All Inventors Must Sign Broadening Reissue Oath
Note:
A broadening reissue application filed before September 16, 2012 requires the original reissue oath or declaration to be signed by all inventors without deceptive intent.

A broadening reissue application filed before September 16, 2012 must be applied for by all of the inventors (patentees), that is, the original reissue oath or declaration must be signed by all of the inventors. See also MPEP § 1414. The error in not presenting broader claims must have been made without deceptive intent. If a supplemental oath or declaration in a broadening reissue application is needed in the application in order to fulfill the requirements of 37 CFR 1.175, the supplemental reissue oath or declaration must be signed by all of the inventors. See In re Hayes, 53 USPQ2d 1222 (Comm’r Pat. 1999) and MPEP § 1414.03.

Jump to MPEP Source · 37 CFR 1.175AIA Effective DatesBroadening Reissue (Two-Year Limit)AIA Overview and Effective Dates
StatutoryInformativeAlways
[mpep-1412-03-1ac84cdf342d7ee3446e2c82]
All Inventors Must Sign Broadening Reissue Oath
Note:
The reissue oath or declaration for a broadening reissue application filed before September 16, 2012 must be signed by all inventors without deceptive intent.

A broadening reissue application filed before September 16, 2012 must be applied for by all of the inventors (patentees), that is, the original reissue oath or declaration must be signed by all of the inventors. See also MPEP § 1414. The error in not presenting broader claims must have been made without deceptive intent. If a supplemental oath or declaration in a broadening reissue application is needed in the application in order to fulfill the requirements of 37 CFR 1.175, the supplemental reissue oath or declaration must be signed by all of the inventors. See In re Hayes, 53 USPQ2d 1222 (Comm’r Pat. 1999) and MPEP § 1414.03.

Jump to MPEP Source · 37 CFR 1.175AIA Effective DatesBroadening Reissue (Two-Year Limit)Error Statement Requirements
Topic
4 rules
Topic

Reissue Claim Requirements

3 rules
StatutoryRequiredAlways
[mpep-1412-03-09a586e2fea2b986bdbcaf2d]
Combination Claims Must Include Subcombination Limitations
Note:
The reissued claims containing combinations must include all limitations of any subcombination claimed in the original patent to avoid broadening.

The addition of combination claims in a reissue application where only subcombination claims were present in the original patent could be a broadening of the invention. The question which must be resolved in this case is whether the combination claims added in the reissue would be for “the invention as claimed” in the original patent. See Ex parte Wikdahl, 10 USPQ2d 1546, 1549 (Bd. Pat. App. & Inter. 1989). The newly added combination claims should be analyzed to determine whether they contain every limitation of the subcombination of any claim of the original patent. If the combination claims (added in the reissue) contain every limitation of the subcombination (which was claimed in the original application), then infringement of the combination must also result in infringement of the subcombination. Accordingly, the patent owner could not, if a reissue patent issues with the combination claims, sue any new party for infringement who could not have been sued for infringement of the original patent. Therefore, broadening does not exist, in spite of the addition of the combination.

Jump to MPEP SourceReissue Claim RequirementsReissue Patent PracticeOriginal Patent Requirement (Same Invention)
StatutoryRecommendedAlways
[mpep-1412-03-1fbe57f6485c6658bf3313ac]
Combination Claims Must Include Subcombination Limitations
Note:
New combination claims in a reissue must include all limitations of any subcombination claimed in the original patent to avoid broadening the invention.

The addition of combination claims in a reissue application where only subcombination claims were present in the original patent could be a broadening of the invention. The question which must be resolved in this case is whether the combination claims added in the reissue would be for “the invention as claimed” in the original patent. See Ex parte Wikdahl, 10 USPQ2d 1546, 1549 (Bd. Pat. App. & Inter. 1989). The newly added combination claims should be analyzed to determine whether they contain every limitation of the subcombination of any claim of the original patent. If the combination claims (added in the reissue) contain every limitation of the subcombination (which was claimed in the original application), then infringement of the combination must also result in infringement of the subcombination. Accordingly, the patent owner could not, if a reissue patent issues with the combination claims, sue any new party for infringement who could not have been sued for infringement of the original patent. Therefore, broadening does not exist, in spite of the addition of the combination.

Jump to MPEP SourceReissue Claim RequirementsReissue Patent PracticeOriginal Patent Requirement (Same Invention)
StatutoryRequiredAlways
[mpep-1412-03-b2e76c536d881e7a75c577de]
Dependent Claims Must Not Broaden Independent Claims
Note:
A dependent claim must not broaden the scope of an independent claim it depends on during reissue proceedings.

As pointed out above, a claim will be considered a broadened reissue claim when it is greater in scope than each and every claim of the patent to be reissued. A corollary of this is that a claim which has been broadened in a reissue as compared to its scope in the patent is not a broadened reissue claim if it is narrower than, or equal in scope to, any other claim which appears in the patent. A common example of this is where dependent claim 2 is broadened via the reissue (other than the addition of a process step to convert an intermediate to a final product), but independent claim 1 on which it is based is not broadened. Because a dependent claim is construed to contain all the limitations of the claim upon which it depends, claim 2 must be at least as narrow as claim 1 and is thus not a broadened reissue claim.

Jump to MPEP SourceReissue Claim RequirementsReissue Patent PracticeOriginal Patent Requirement (Same Invention)
Topic

Reissue Oath/Declaration Content

2 rules
StatutoryInformativeAlways
[mpep-1412-03-e2881f7b60872da2fa5230c4]
Reissue Claim Including Uncovered Subject Matter Must Be Broadened
Note:
A claim in a reissue application that includes subject matter not covered by the original patent claims is considered broadened and enlarges the scope of the patent.

A claim of a reissue application enlarges the scope of the claims of the patent if it is broader in at least one respect, even though it may be narrower in other respects. See, e.g., 37 CFR 1.175(b). A claim in the reissue application which includes subject matter not covered by the patent claims enlarges the scope of the patent claims. For example, if any amended or newly added claim in the reissue contains within its scope any conceivable product or process which would not have infringed the patent, then that reissue claim would be broader than the patent claims. Tillotson, Ltd. v. Walbro Corp., 831 F.2d 1033, 1037 n.2, 4 USPQ2d 1450, 1453 n.2 (Fed. Cir. 1987); In re Ruth, 278 F.2d 729, 730, 126 USPQ 155, 156 (CCPA 1960); In re Rogoff, 261 F.2d 601, 603, 120 USPQ 185, 186 (CCPA 1958). A claim which covers something that the original claims do not is a broadened claim. A claim would be considered a broadening claim if the patent owner would be able to sue any party for infringement who previously could not have been sued for infringement. Thus, where the original patent claims only the process, and the reissue application newly adds product claims, the scope of the claims has been broadened because a party could not necessarily be sued for infringement of the product based on the claims of the original patent (if it were made by a different process).

Jump to MPEP Source · 37 CFR 1.175(b)Reissue Oath/Declaration ContentReissue Oath or DeclarationOriginal Patent Requirement (Same Invention)
StatutoryRequiredAlways
[mpep-1412-03-93f941ac83f34c4507905356]
Replacement Oath Required for Unidentified Errors in Reissue Application
Note:
A replacement oath is needed if errors are not identified, even though a supplemental oath for corrected errors is not required.

Any reissue application filed on or after September 16, 2012 must be applied for by all of the patentees. However, in a broadening reissue application filed on or after September 16, 2012, the original reissue oath or declaration must be signed by all of the inventors, unless the application for the patent (for which reissue is requested) was filed under 37 CFR 1.46 by the assignee of the entire interest (see 37 CFR 1.175(c)(2)). See also MPEP § 1414. A supplemental oath or declaration to account for errors corrected subsequent to the original oath or declaration is not needed for the application; however, a replacement oath or declaration would still be required where there is a failure to identify any error, or a failure to identify at least one error of the type that would support a reissue. Such a replacement oath or declaration must be signed by all of the inventors, unless the application for the patent (for which reissue is requested) was filed under 37 CFR 1.46 by the assignee of the entire interest.

Jump to MPEP Source · 37 CFR 1.46Reissue Oath/Declaration ContentError Identification in OathSupplemental Reissue Oath/Declaration
Topic

Patent Grant and Document Format

2 rules
StatutoryInformativeAlways
[mpep-1412-03-9884a55cd1970883820ae81a]
Requirement for Including Oath or Declaration Within Two Years of Grant
Note:
The applicant must include an oath or declaration indicating a desire to seek broadened claims within two years of the patent grant; failure to do so bars subsequent attempts to broaden the claims after the two-year limit.

In re Fotland, 779 F.2d 31, 228 USPQ 193 (Fed. Cir. 1985), cert. denied, 476 U.S. 1183 (1986) (The failure by an applicant to include an oath or declaration indicating a desire to seek broadened claims within two years of the patent grant will bar a subsequent attempt to broaden the claims after the two year limit.)

Jump to MPEP SourcePatent Grant and Document FormatPatent Issue and PublicationReissue Oath or Declaration
StatutoryPermittedAlways
[mpep-1412-03-21214b2396820f7adaa4f79b]
Correction of Improperly Executed Declaration Allowed After Patent Grant
Note:
The Federal Circuit permits the correction of an improperly executed declaration even if it is made more than two years after the patent grant.

In re Bennett, 766 F.2d 524, 528, 226 USPQ 413, 416 (Fed. Cir. 1985) (en banc) (A reissue application with broadened claims was filed within two years of the patent grant; however, the declaration was executed by the assignee rather than the inventor. The Federal Circuit permitted correction of the improperly executed declaration to be made more than two years after the patent grant.)

Jump to MPEP SourcePatent Grant and Document FormatPatent Issue and PublicationReissue Patent Practice
Topic

Error Statement Requirements

1 rules
StatutoryRequiredAlways
[mpep-1412-03-c854254fd1545641bf1a8258]
Error Without Deceptive Intent Required for Broader Claims in Reissue
Note:
The error in not presenting broader claims must be made without deceptive intent when filing a broadening reissue application.

A broadening reissue application filed before September 16, 2012 must be applied for by all of the inventors (patentees), that is, the original reissue oath or declaration must be signed by all of the inventors. See also MPEP § 1414. The error in not presenting broader claims must have been made without deceptive intent. If a supplemental oath or declaration in a broadening reissue application is needed in the application in order to fulfill the requirements of 37 CFR 1.175, the supplemental reissue oath or declaration must be signed by all of the inventors. See In re Hayes, 53 USPQ2d 1222 (Comm’r Pat. 1999) and MPEP § 1414.03.

Jump to MPEP Source · 37 CFR 1.175Error Statement RequirementsReissue Oath/Declaration ContentGrounds for Reissue

Examiner Form Paragraphs

Examiner form paragraphs are standard language that you might see in an Office Action or communication from the USPTO. Examiners have latitude to change the form paragraphs, but you will often see this exact language.

¶ 14.12 ¶ 14.12 Rejection, 35 U.S.C. 251, Broadened Claims After Two Years

Claim [1] rejected under 35 U.S.C. 251 as being broadened in a reissue application filed outside the two year statutory period. [2] A claim is broader in scope than the original claims if it contains within its scope any conceivable product or process which would not have infringed the original patent. A claim is broadened if it is broader in any one respect even though it may be narrower in other respects.

Examiner Note

The claim limitations that broaden the scope should be identified and explained in bracket 2. See MPEP § 1412.03 .

¶ 14.13 ¶ 14.13 Rejection, 35 U.S.C. 251, Broadened Claims Filed by Assignee

Claim [1] rejected under 35 U.S.C. 251 as being improperly broadened in a reissue application made and sworn to by the assignee. The application for reissue may be made and sworn to by the assignee of the entire interest only if the application does not seek to enlarge the scope of the claims of the original patent or, for reissue applications filed on or after September 16, 2012, the application for the original patent was filed by the assignee of the entire interest under 37 CFR 1.46 .

[2] A claim is broader in scope than the original claims if it contains within its scope any conceivable product or process which would not have infringed the original patent. A claim is broadened if it is broader in any one respect even though it may be narrower in other respects.

Examiner Note

The claim limitations that broaden the scope should be identified and explained in bracket 2. See MPEP § 1412.03 .

Citations

Primary topicCitation
Broadening Reissue (Two-Year Limit)
Original Patent Requirement (Same Invention)
Reissue Patent Practice
35 U.S.C. § 251
Broadening Reissue (Two-Year Limit)35 U.S.C. § 251(d)
AIA Effective Dates
Broadening Reissue (Two-Year Limit)
Error Statement Requirements
37 CFR § 1.175
AIA Effective Dates
Broadening Reissue (Two-Year Limit)
Consent of Assignee
Original Patent Requirement (Same Invention)
Reissue Oath/Declaration Content
37 CFR § 1.175(b)
AIA Effective Dates
Consent of Assignee
Reissue Oath/Declaration Content
37 CFR § 1.175(c)(2)
AIA Effective Dates
Consent of Assignee
Reissue Oath/Declaration Content
37 CFR § 1.46
AIA Effective Dates
Broadening Reissue (Two-Year Limit)
Consent of Assignee
Error Statement Requirements
Reissue Oath/Declaration Content
MPEP § 1414
AIA Effective Dates
Broadening Reissue (Two-Year Limit)
Error Statement Requirements
MPEP § 1414.03
Consent of Assignee
Patent Grant and Document Format
In re Bennett, 766 F.2d 524, 528, 226 USPQ 413, 416 (Fed. Cir. 1985)
Broadening Reissue (Two-Year Limit)In re Doll, 419 F.2d 925, 928, 164 USPQ 218, 220 (CCPA 1970)
Patent Grant and Document FormatIn re Fotland, 779 F.2d 31, 228 USPQ 193 (Fed. Cir. 1985)
Broadening Reissue (Two-Year Limit)
Consent of Assignee
Original Patent Requirement (Same Invention)
Reissue Oath/Declaration Content
In re Rogoff, 261 F.2d 601, 603, 120 USPQ 185, 186 (CCPA 1958)
Broadening Reissue (Two-Year Limit)
Consent of Assignee
Original Patent Requirement (Same Invention)
Reissue Oath/Declaration Content
In re Ruth, 278 F.2d 729, 730, 126 USPQ 155, 156 (CCPA 1960)
Broadening Reissue (Two-Year Limit)
Original Patent Requirement (Same Invention)
Reissue Patent Practice
In re Staats, 671 F.3d 1350, 101 USPQ2d 1930 (Fed. Cir. 2012)
Broadening Reissue (Two-Year Limit)
Original Patent Requirement (Same Invention)
Reissue Patent Practice
See Switzer v. Sockman, 333 F.2d 935, 142 USPQ 226 (CCPA 1964)
Broadening Reissue (Two-Year Limit)
Original Patent Requirement (Same Invention)
Reissue Patent Practice
The court in Vectra Fitness Inc. v. TNWK Corp., 162 F.3d 1379, 1383, 49 USPQ2d 1144, 1147 (Fed. Cir. 1998)

Source Text from USPTO’s MPEP

This is an exact copy of the MPEP from the USPTO. It is here for your reference to see the section in context.

BlueIron Last Updated: 2025-12-31